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// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. LinDB licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package lockers

import (
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
)

func TestSpinLock_TryLock(t *testing.T) {
	var sl SpinLock
	assert.True(t, sl.TryLock())
	assert.False(t, sl.TryLock())
}

func TestSpinLock_Lock_Unlock(t *testing.T) {
	var sl SpinLock
	sl.Lock()
	assert.False(t, sl.TryLock())

	sl.Unlock()
	assert.True(t, sl.TryLock())
	sl.Unlock()

	sl.Lock()
	go func() {
		time.Sleep(time.Millisecond)
		sl.Unlock()
	}()
	sl.Lock()
	assert.False(t, sl.TryLock())
}
